OpenStack Cloud Computing Cookbook - Fourth Edition

Attaching volumes to an instance

Now that we have a usable volume, we can attach it to any instance. We'll do this using the openstack server volume add command.

Getting ready

To attach a volume to an instance, you will need the following:

• The openstack command-line client
• An openrc file with appropriate credentials for the environment
• The name or ID of the volume to attach
• The name or ID of the instance to attach the volume to

For our example, these values are as follows:

• Volume: cookbook.volume
• Instance: cookbook.test

How to do it...

Carry out the following steps to attach a volume to an instance using the openstack client:

1. First, let's list running instances to get the ID of our instance:

   openstack server list -c Name -c ID -f table
   

   An example showing ...